Abstract

This work presents a new low-temperature polysilicon (LTPS) thin-film transistor pixel circuit with a novel driving scheme that is based on the simultaneous emission and reverse-biased methods. During high-speed 3D operation at 240 Hz, the proposed circuit can successfully compensate for the TFT threshold voltage variation and improve the IR drop in the power line. Simulation and experimental results confirm the stability of the OLED current and the amelioration of the OLED lifetime. Furthermore, over the entire range of data voltages, the nonuniformity of OLED current is less than 5%.

© 2012 IEEE

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  1. C. C. Wu, S. D. Theiss, G. Gu, M. H. Lu, J. C. Sturm, S. Wagner, S. R. Forrest, "Integration of organic LEDs and amorphous Si TFTs onto flexible and lightweight metal foil substrates," IEEE Electron Device Lett. 18, 609-612 (1997).
  2. A. Nathan, G. R. Chaji, S. J. Ashtiani, "Driving schemes for a-Si and LTPS AMOLED displays," J. Display Technol. 1, 267-277 (2005).
  3. G. R. Chaji, A. Nathan, "A stable voltage-programmed pixel circuit for a-Si:H AMOLED displays," J. Display Technol. 2, 347-358 (2006).
  4. S. J. Ashtiani, P. Servati, D. Striakhilev, A. Nathan, "A 3-TFT current-programmed pixel circuit for AMOLEDs," IEEE Trans. Electron Devices 52, 1514-1518 (2005).
  5. C. L. Lin, Y. C. Chen, "A novel LTPS-TFT pixel circuit compensating for TFT threshold-voltage shift and OLED degradation for AMOLED," IEEE Electron Device Lett. 28, 129-131 (2007).
  6. Y. C. Lin, H. P. D. Shieh, "Improvement of brightness uniformity by ac driving scheme for AMOLED display," IEEE Electron Device Lett. 25, 728-730 (2004).
  7. S. Yujuan, Z. Yi, C. Xinfa, L. Shiyong, "A simple and effective ac pixel driving circuit for active matrix OLED," IEEE Trans. Electron. Devices 50, 1137-1140 (2003).
  8. C. L. Lin, K. W. Chou, C. C. Hung, C. D. Tu, "Lifetime amelioration for an AMOLED pixel circuit by using a novel ac driving scheme," IEEE Trans. Electron Devices 58, 2652-2659 (2011).
  9. D. W. Park, C. K. Kang, Y. Park, B. Chung, K. H. Chung, B. H. Kim, S. S. Kim, "High-speed AMOLED pixel circuit and driving scheme," Proc. SID Tech. Dig. (2010) pp. 806-809.
  10. C. L. Lin, W. Y. Chang, C. C. Hung, C. D. Tu, "LTPS-TFT pixel circuit to compensate for OLED luminance degradation in three-dimensional AMOLED display," IEEE Electron Device Lett. 33, 700-702 (2012).
  11. B. W. Lee, I. H. Ji, S. M. Han, S. D. Sung, K. S. Shin, J. D. Lee, B. H. Kim, B. H. Berkeley, S. S. Kim, "Novel simultaneous emission driving scheme for crosstalk-free 3D AMOLED TV," Proc. SID Tech. Dig. (2010) pp. 758-761.
  12. J. L. Sanford, F. R. Libsch, "TFT AMOLED pixel circuits and driving methods," Proc. SID Tech. Dig. (2003) pp. 10-13.
  13. D. Zou, M. Yahiro, T. Tsutsui, "Improvement of current-voltage characteristics in organic light emitting diodes by application of reversed bias voltage," Jpn. J. Appl. Phys. 37, L1 406-L1 408 (1998).
  14. B. Y. Chung, D. W. Park, Y. S. Park, D. Y. Choi, K. Kim, B. H. Kim, S. S. Kim, "Driving method for a 2D-3D switchable AMOLED display using progressive or simultaneous emission," Proc. SID Tech. Dig. (2011) pp. 268-271.

2012 (1)

C. L. Lin, W. Y. Chang, C. C. Hung, C. D. Tu, "LTPS-TFT pixel circuit to compensate for OLED luminance degradation in three-dimensional AMOLED display," IEEE Electron Device Lett. 33, 700-702 (2012).

2011 (1)

C. L. Lin, K. W. Chou, C. C. Hung, C. D. Tu, "Lifetime amelioration for an AMOLED pixel circuit by using a novel ac driving scheme," IEEE Trans. Electron Devices 58, 2652-2659 (2011).

2007 (1)

C. L. Lin, Y. C. Chen, "A novel LTPS-TFT pixel circuit compensating for TFT threshold-voltage shift and OLED degradation for AMOLED," IEEE Electron Device Lett. 28, 129-131 (2007).

2006 (1)

G. R. Chaji, A. Nathan, "A stable voltage-programmed pixel circuit for a-Si:H AMOLED displays," J. Display Technol. 2, 347-358 (2006).

2005 (2)

S. J. Ashtiani, P. Servati, D. Striakhilev, A. Nathan, "A 3-TFT current-programmed pixel circuit for AMOLEDs," IEEE Trans. Electron Devices 52, 1514-1518 (2005).

A. Nathan, G. R. Chaji, S. J. Ashtiani, "Driving schemes for a-Si and LTPS AMOLED displays," J. Display Technol. 1, 267-277 (2005).

2004 (1)

Y. C. Lin, H. P. D. Shieh, "Improvement of brightness uniformity by ac driving scheme for AMOLED display," IEEE Electron Device Lett. 25, 728-730 (2004).

2003 (1)

S. Yujuan, Z. Yi, C. Xinfa, L. Shiyong, "A simple and effective ac pixel driving circuit for active matrix OLED," IEEE Trans. Electron. Devices 50, 1137-1140 (2003).

1998 (1)

D. Zou, M. Yahiro, T. Tsutsui, "Improvement of current-voltage characteristics in organic light emitting diodes by application of reversed bias voltage," Jpn. J. Appl. Phys. 37, L1 406-L1 408 (1998).

1997 (1)

C. C. Wu, S. D. Theiss, G. Gu, M. H. Lu, J. C. Sturm, S. Wagner, S. R. Forrest, "Integration of organic LEDs and amorphous Si TFTs onto flexible and lightweight metal foil substrates," IEEE Electron Device Lett. 18, 609-612 (1997).

IEEE Electron Device Lett. (2)

C. C. Wu, S. D. Theiss, G. Gu, M. H. Lu, J. C. Sturm, S. Wagner, S. R. Forrest, "Integration of organic LEDs and amorphous Si TFTs onto flexible and lightweight metal foil substrates," IEEE Electron Device Lett. 18, 609-612 (1997).

Y. C. Lin, H. P. D. Shieh, "Improvement of brightness uniformity by ac driving scheme for AMOLED display," IEEE Electron Device Lett. 25, 728-730 (2004).

IEEE Trans. Electron Devices (1)

C. L. Lin, K. W. Chou, C. C. Hung, C. D. Tu, "Lifetime amelioration for an AMOLED pixel circuit by using a novel ac driving scheme," IEEE Trans. Electron Devices 58, 2652-2659 (2011).

IEEE Electron Device Lett. (2)

C. L. Lin, W. Y. Chang, C. C. Hung, C. D. Tu, "LTPS-TFT pixel circuit to compensate for OLED luminance degradation in three-dimensional AMOLED display," IEEE Electron Device Lett. 33, 700-702 (2012).

C. L. Lin, Y. C. Chen, "A novel LTPS-TFT pixel circuit compensating for TFT threshold-voltage shift and OLED degradation for AMOLED," IEEE Electron Device Lett. 28, 129-131 (2007).

IEEE Trans. Electron Devices (1)

S. J. Ashtiani, P. Servati, D. Striakhilev, A. Nathan, "A 3-TFT current-programmed pixel circuit for AMOLEDs," IEEE Trans. Electron Devices 52, 1514-1518 (2005).

IEEE Trans. Electron. Devices (1)

S. Yujuan, Z. Yi, C. Xinfa, L. Shiyong, "A simple and effective ac pixel driving circuit for active matrix OLED," IEEE Trans. Electron. Devices 50, 1137-1140 (2003).

J. Display Technol. (1)

G. R. Chaji, A. Nathan, "A stable voltage-programmed pixel circuit for a-Si:H AMOLED displays," J. Display Technol. 2, 347-358 (2006).

J. Display Technol. (1)

Jpn. J. Appl. Phys. (1)

D. Zou, M. Yahiro, T. Tsutsui, "Improvement of current-voltage characteristics in organic light emitting diodes by application of reversed bias voltage," Jpn. J. Appl. Phys. 37, L1 406-L1 408 (1998).

Other (4)

B. Y. Chung, D. W. Park, Y. S. Park, D. Y. Choi, K. Kim, B. H. Kim, S. S. Kim, "Driving method for a 2D-3D switchable AMOLED display using progressive or simultaneous emission," Proc. SID Tech. Dig. (2011) pp. 268-271.

B. W. Lee, I. H. Ji, S. M. Han, S. D. Sung, K. S. Shin, J. D. Lee, B. H. Kim, B. H. Berkeley, S. S. Kim, "Novel simultaneous emission driving scheme for crosstalk-free 3D AMOLED TV," Proc. SID Tech. Dig. (2010) pp. 758-761.

J. L. Sanford, F. R. Libsch, "TFT AMOLED pixel circuits and driving methods," Proc. SID Tech. Dig. (2003) pp. 10-13.

D. W. Park, C. K. Kang, Y. Park, B. Chung, K. H. Chung, B. H. Kim, S. S. Kim, "High-speed AMOLED pixel circuit and driving scheme," Proc. SID Tech. Dig. (2010) pp. 806-809.

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